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AD8381 Datasheet(PDF) 1 Page - Analog Devices |
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AD8381 Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a AD8381 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2002 Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver FUNCTIONAL BLOCK DIAGRAM DB (0:9) VID0 VID1 VID2 VID3 VID4 2-STAGE LATCH XFR VID5 DAC 10 10 10 10 10 10 10 10 10 10 10 10 DAC 2-STAGE LATCH 2-STAGE LATCH 2-STAGE LATCH 2-STAGE LATCH 2-STAGE LATCH DAC 10 SEQUENCE CONTROL DAC DAC DAC BIAS SCALING CONTROL VREFHI VREFLO INV VMID STBY BYP CLK STSQ E/O L/R AD8381 FEATURES High Voltage Drive: Rated Settling Time to within 1.3 V of Supply Rails Output Overload Protection High Update Rates: Fast, 100 Ms/s 10-Bit Input Word Rate Low Power Dissipation: 570 mW Includes STBY Function Voltage Controlled Video Reference (Brightness) and Full-Scale (Contrast) Output Levels 3.3 V or 5 V Logic and 9 V–18 V Analog Supplies High Accuracy: Laser Trimming Eliminates External Calibration Flexible Logic: INV Reverses Polarity of Video Signal STSQ/XFR for Parallel AD8381 Operation in 12-Channel Systems Drives Capacitive Loads: 27 ns Settling Time to 1% into 150 pF Load Slew Rate 265 V/ s with 150 pF Load Available in 48-Lead LQFP APPLICATIONS LCD Analog Column Driver PRODUCT DESCRIPTION The AD8381 provides a fast, 10-bit latched decimating digital input, which drives six high voltage outputs. Ten-bit input words are sequentially loaded into six separate high-speed, bipolar DACs. Flexible digital input format allows several AD8381s to be used in parallel for higher resolution displays. STSQ synchronizes sequential input loading, XFR controls synchronous output updating and R/L controls the direction of loading as either Left to Right or Right to Left. Six channels of high voltage output drivers drive to within 1.3 V of the rail in rated settling time. The output signal can be adjusted for brightness, signal inversion and contrast for maximum flexibility. The AD8381 is fabricated on ADI’s proprietary, fast bipolar 24 V process, providing fast input logic, bipolar DACs with trimmed accuracy and fast settling, high voltage precision drive amplifiers on the same chip. The AD8381 dissipates 570 mW nominal static power. STBY pin reduces power to a minimum, with fast recovery. The AD8381 is offered in a 48-lead 7 × 7 × 1.4 mm LQFP package and operates over the commercial temperature range of 0 °C to 85°C. DecDriver is a trademark of Analog Devices, Inc. |
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